A three$-$span continuous slab, as shown in Fig. Q$-1,$ is to carry a characteristic dead load inclusive of self$-$weight, $g_k,$ of $6k\frac{N}{m^2},$ and a characteristic imposed load, $q_k,$ of $5k\frac{N}{m^2}.$ The slab thickness is $200mm$ throughout. Material properties are: $f_{ck}=32$MPa; and $f_{yk}=500$MPa.

$($a$)$ Determine using design formulae, the flexural reinforcement for the section at middle of the central span $BC,$ and sketch all required reinforcement on a cross$-$section. Assume $d=150mm$ for the main steel. $[$Use the Three$-$Moment Equation to obtain the design moment.$]$

Handwritten solution please